Spooler.



A. E. RIHOADES.

SPOOLER.

APPLICATION FILED FFIB. 14. 1913.

1,152,845. Patented Sept. 7, 1915.

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, To all whom it may concern:

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' SPOOLER.

Be itiknownthat I,ALoNzo E. RHoADEs, a citizen of theUnited States, and resident of Hopedale, county of Worcester, State of Massachusettsfhave invented an Improvement in Spoolers, of which the following description, in connection with the accompanying drawing, is a specification, likechar acters on the drawing representing like parts. I

This invention relates to spoolers, and especiallyto spoolers of that type wherein the bobbin from which the yarn is drawn is supported on a spindle instead of being sup ported in a pan. In the operation of spoolers, thespool on which thesyarn is wound is rotated at a substantially uniform rate of speed, and therefore the yarn is drawn from the bobbin at a a substantial uniform surface speed.

. VVhe're the bobbin from which the yarn is being spooled is wound with what is known as a warp wind, that is, a wind in which each layer of yarn extends the full length of the bobbin, the pull or tension on the yarn due to drawing the yarn from the bobbin is very nearly'uniform, and does not change appreciably from one layer to the other of the yarn mass on the bobbin, But where the bobbin is wound with the so-called weft wind the tension on the yarn varies con siderably from one end of each layer to the other. This is due to the cone shape of each layer and to the fact thatas one end of each layer has asmaller diameter than the other end of the layer the uniform surface speed at which the yarn is delivered to the spool will. cause the bobbin to have a variable speed of rotation, the bobbin rotating faster when. the yarn is being unwound from the small end of the layer than when the yarn is being unwound from the large end of the layer. This varying speed of rotation of the bobbin produces a varying tension or pull on the yarn, the tension being greater when the yarn is beingunwound from the portion of smaller diameter than when the yarnis beingunwound from the portion of larger diameter. Moreover, the inertia of the, bobbin is likely to cause it to overrun as the yarn being delivered passes from the small to the largeend of the layer. If the bobbin does overrun a kink is verylikely to form inthe slack of the yarn produced by the overrunning, and when the yarn drawn tautu again the sudden tension im- Specification of Letters Patent. Application filed February 14, 1913.

tented Sept. *7, 1915. Seria11\To. 748,280. I

parted thereto is very yarn to break. This is especially true with fine counts of yarmand when the yarnmass on t e bobbin iscomparatively large. In my present invention I aim to provide a novel tension device for the bobbin which is adapted or pull on the yarn caused by the variation in the drag of the bobbin, and which applies a retarding friction to the bobbin as the latter tends to overrun, such overrunning tendency.

' By means of my invention I find that yarn of the most tender and delicate char-. acter can be readily spooled from bobbins with a minimum breakage. I

The various novel features of my invention will be fully described in the subjoined specification and particularly pointed out in the following claims. s

.Figure 1 is a'transverse Sectional view of likely to cause the to compensate for the tension thereby checking a sufiicient portion of a spooler with one embodiment of my present invention embodied therein; Fig. 2 is an enlarged side elevation ofa bobbin-holder embodying my invention, the bobbin being indicated by dotted lines; Fig. 3 is an outer end view of the bobbin-holder, iewed axially of the bobbin-receiving spindle; Fig. 4c is a diagram view showing the operation of my improved tension member. I

Referring to Fig. 1, the main frame A, drunr-shaft A for driving the rotatable spool-carriers S on which are mounted the spools A to receive the thread or yarn from the bobbins, each side of the frame) on which the bobbinholders are mounted, the thread-guides t, thereciprocating traverse-rods, as T, on which they are mounted, the boxes E for the full bobbins, and the open-topped hoppers H the horizontal rod'B .(one at for the spent bobbins, may be and are of well known construction and substantially as shown in my prior Patent No. 744,797, granted November 24, 1903.

While only a portion of one side of the i responding set oftthread-guides, as 2,, and a series of bobbin-holders is mounted on the rod B at each side of the frame. p f The bobbin-holder embodying my present invention comprises a casting having a jaw 1 to embrace the rod B, an elongated arm 2 rigidly connected with and laterally offset from the jaw by the ear orbend and a depending, preferably internally threaded hub 4 into which is screwed the tubular shank 5 of a bearing 6, the hub being formed at the bottom of the jaw, as herein I shown. The bearing supports a freely rotatable bobbin-receiving spindle 7, the pintle 8 thereof entering the bearing, and an annular collar 9 on the spindle serves as a stop for thebutt of the bobbin. The bearing has an oil' reservoir 10 the lid of which is prolonged at 11 to overhang the collar. and retain the spindle in place in the bearing.

As shown in Fig. 3 the hub 4: has a sets'crew. 12 to engage the bearing 6 and: prevent any tendency of the latter to turn in the hub. In practice the usual spinmngspindle of the bolster-bearing type, and its bearing base, may be used, as w ll be observed from an inspection of Fig. 2, the base or bearing 6 being held in the hub 4L instead of in a spindle rail. The spindle 7 is substantially parallel to the arm 2, and is located below and at one side of'it, as shown, thereby affording ample room fora bobbin carrying a yarn-mass of large dlameter. The jaw 1 partly embraces the rod B and is clamped fixedly thereon by a suitable. setscrew 13, the spindle 7 being set at the requisite upward and frontward inclination to properly deliver the yarn. The arm 2 is apertured at 11, Fig. 2, and the apertures are provided with alined holes 15 to receive loosely the oppositely turned ends 16 of a tension member, preferably made of heavy wire and having a straight, elongated portion 17 connected by the bends 18, 19 with v the ends 16, so that the tension member is pivotally supported by the arm 2 with the straight portion 17 adj acent'and parallel to the spindle 7.

i As shown in Fig. 3 the straight parts of the bends 18, 19 adjacent the ends 16 are long enough to extend from the arm 2 above and across the spindle, and when the latter is bare the bottoms of the apertures 14 serve as stops for the bends, to limit downward swing of the tension member. The bend .19 is flared at its front end, at 20, to permit the ready application ofthe bobbin 21 to-the spindle 7, the butt of the bobbin resting against the stop-collar 9 and the bobbin frictionally engaging the spindle to rotate therewith. -The yarn is led under the straight, elongated part 17 of the pivoted tension member and thence up to the reciprocating thread-guide t, as usual. The tension member is constructed so that normally a portion thereof will engage either the bobbin or the yarn mass thereon, thereby to apply to the bobbin a frictional pressure. Said tension member may, therefore, be I(galled a combined tension and braking mem- In the illustrated embodiment of the i'nvention the portion of the tension member which has frictional engagement with the bobbin or the yarn mass is the portion designated 22, althoughit would be within my invention to so shape this tension member that some other portion thereof would normally have frictional engagement with the bobbin or yarn mass, with the bobbin support or with any part connected to and r0 tating with the bobbin, and the. term bob bin is to be understood in the claimsas in cluding either. In the operation of the de vice when the "parts are at rest the portion 22 of the tension device rests on the bobbin or on the yarn mass, according to the amount of yarn which the bobbin may have thereon. j

The direction in which the yarn is drawn off from the bobbin is such relative to the plane of the portion 17 of the tension member and the. pivots 16 that frictional engagement of the yarn with the part'17 will tend to swing the tension member upwardly or away from the bobbin more or less,-depending upon the amount of tension on the yarn, and when the tension'on the yarn is sulficient the portion 22 of the tension member will be raised or moved from contact with the bobbin or yarn mass. When the tension on the yarn diminishes sufficiently, the portion 22 of the tension'member will then be lowered or move into contact with the bob' bin or yarn mass. As the yarn is drawn ofi from the bobbin the speed of rotation of the bobbin varies'according to the diameter of the yarn mass thereon, thus varying the tension to which the yarn is subjected and causing a vibrating movement of the tension member 17. This variation is quite marked as the yarn unwinds back and forth between the minimum and maximum diameters of the yarn mass of the ordinary weft or filling wind. The vibrating movement of the tension member compensates for this variation in the speed of the bobbin. If at any time the bobbin tends to overrun, then the slack which is thus put into the yarn will allow the tension memberto drop into engagement with either the bobbin or yarn mass thereon, and thus a braking pressure or retarding friction will be applied to the bobbin which will check the overrunning tendency. My improved tension member thus operates automatically to maintain a substantially uniform tension on the yarn,

ing a clamping jaw having a depending hub and an elongated, laterally offset'arm, a bearing fixed in the hub, a bobbin-receiving spindle mounted to rotate freely in the bearing and extended substantially parallel to and below the arm, and an elongated tension member pivotally connected with the arm and having a portion extended lengthwise of the spindle at the side thereof farthest from the arm, the tension member engaging frictionally the rotating yarn mass on the bobbin.

2. In a spooler, a bobbin-holder comprising an elongated arm provided at its inner end with a laterally ofiset, axially parallel bearing, a bobbin-receiving spindle mounted torotate freely in the bearing, and a tension member having an elongated portion extended lengthwise of and adjacent the spindle and connected pivotally by bends with the arm, the connecting bends extending over the spindle to enable said member to rest upon and engage frictionally the yarn mass.

3. In a spooler, a bobbin holder comprising a bracket having a laterally offset ear and a rigidly connected, elongated arm, a bearing fixedly connected with the bracket below the ear, a bobbin-receiving spindle freely rotatable in the bearing and extended parallel to and beyond the arm, a tension member pivotally connected with the arm and having an elongated portion located adjacent the spindle at the side thereof farthest from the arm, and means on the arm to limit downward swinging movement of the tension member.

4:. In a spooler provided with a rotatablespool-carrier and a reciprocating threadguide, and a horizontal rod fixedly mounted below the spool-carrier, in combination, an upwardly inclined and prolonged arm fixedly mounted at its inner end on the rod, a bearing offset laterally from and fixedly connected with the arm below it, a bobbinreceiving spindle freely rotatable in j the bearing and in substantial parallelism with the arm, and a tension member pivotally connected with the arm and having an elongated portion adjacent and extended lengthwise of the spindle the yarn passing under said elongated portion as it travels from the bobbin to the spool, said tension member preventing overrunning of the bobbin and exerting the requisite tension on the yarn.

5. In a spooler provided with a rotatable spool-carrier and reciprocating thread-guide, in combination, a freely rotable spindle, a

bobbin mounted on said spindle with yarn wound thereon with a weft or filling wind, and means for automatically controlling the rotation of the bobbin to deliver the yarn Gopies of this patent may be obtained for five cents each. by addressing the therefrom at a substantially uniform tension.

6. In a spooler provided with a rotatable spool-carrier and reciprocating threadguide, in combination, a freely rotatable I variation in its speed of rotation as the yarn is unwound therefrom to the spool.

7. In a spooler provided with a rotatable spool-carrier and reciprocating threadguide, in combination, a freely rotatable spindle, a bobbin mounted on said spindle with yarn wound thereon varying longitudinally of the bobbin in its mass diameter, and a tension member mounted to swing by gravity into contact with the bobbin and engaging the run of yarn from the bobbin to the thread-guide, whereby the variation in tension on the yarn, due to a variation in speed of rotation of the bobbin while the yarn is unwound therefrom, causes the tension member to swing into or out of contact with the bobbin and restore the normal tension.

8. In a spooler provided with a rotatable spool-carrier and reciprocating threadguide, in combination, a freely rotatable spindle, a bobbin mounted on said spindle with yarn wound thereon varying longitudinally of the bobbin in its mass diameter,"

and a tension member movable into contact with the bobbin and engaging the run of yarn from the bobbin to the thread-guide whereby the variation in tension on the yarn, due to a variation in speed of rotation of the bobbin while the yarn is unwound therefrom, causes the tension member to move into or out of contact with the bobbin and restore the normal tension.

9. In a spooler provided with a rotatable spool-carrier and a reciprocating threadguide, in combination, a freely rotatable spindle on which the bobbin is mounted, a support for the spindle, a pivotally mounted combined tension and braking member Commissioner of Patents,

Washington, D. C. 

